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A189150 T(n,k)=Number of nXk array permutations with each element making zero or one knight moves 6
1, 1, 1, 1, 1, 1, 1, 4, 4, 1, 1, 16, 49, 16, 1, 1, 36, 569, 569, 36, 1, 1, 81, 4372, 22865, 4372, 81, 1, 1, 225, 42689, 602565, 602565, 42689, 225, 1, 1, 625, 412189, 20037184, 46350185, 20037184, 412189, 625, 1, 1, 1600, 3988132, 697391125, 5025299720 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,8

COMMENTS

Table starts

.1....1.......1.........1..........1..........1............1...........1

.1....1.......4........16.........36.........81..........225.........625

.1....4......49.......569.......4372......42689.......412189.....3988132

.1...16.....569.....22865.....602565...20037184....697391125.23675552985

.1...36....4372....602565...46350185.5025299720.585494657168

.1...81...42689..20037184.5025299720

.1..225..412189.697391125

.1..625.3988132

.1.1600

.1

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..60

EXAMPLE

Some solutions for 5X3

..5..8..2....0..8..3....5..8..7....7..8..2....0..8..2....7..1..2....5..6..7

..3..4..0....2..9.10....2..4.10...10..4..5....3.11.10...10.11..0....3..4..0

..1.12.13....1..7.13....6..0..1...13..0..1...13..7..1....5.14..8....1..2..8

.14.10.11....4..5.11...14..3.12...14..3.12....9..5..4....4..3..6....9.10.12

..7..6..9...12..6.14...11.13..9...11..6..9...12..6.14...12.13..9...11.13.14

CROSSREFS

Sequence in context: A174126 A075613 A221837 * A155194 A080044 A128433

Adjacent sequences:  A189147 A189148 A189149 * A189151 A189152 A189153

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Apr 17 2011

STATUS

approved

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Last modified September 20 01:54 EDT 2020. Contains 337260 sequences. (Running on oeis4.)